The Bangor Central representative said: “I am shocked to hear reports of a further incident of this nature near to a school in Bangor. I would urge anyone with information regarding this matter, or any suspicions about further activity, to contact the PSNI on 101 to help them with their investigations.

“I would also urge parents and students to remain vigilant and to keep looking out for each other. If an incident of this nature happens again then pupils should go straight to a teacher or school member of staff.”

Wednesday’s incident at Bangor Academy is the latest report of ‘stranger danger’ in the seaside town.

In November the PSNI visited Glenlola Collegiate to reinforce the safety message after an incident close to the grounds of the school.

In a letter to parents Glenlola headmaster Mr Thompson said a pupil witnessed “inappropriate behaviour” in a car park beside the old leisure centre while she made her way to school.

One parent said the incident happened just around the corner from the town’s police station.